iLockPad for Android - offers a large catalog of cryptographic and steganographic ciphers ready to encrypt your text and make it unreadable to unauthorized persons. There are three categories of utilities available:

ENCRYPTION - cryptographic algorithms that transform your message into an incomprehensible text, and that your recipient can use to decipher the text and reconstruct the message.

STEGANOGRAPHY - Algorithms that instead of making the message unreadable by changing the characters, simply messes up the characters of the message, making it equally unreadable.

KEYS - Some cryptographic algorithms require a key, a password, to work. In this section there are several methods to create new and secure keys.